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1. 发明申请

US20230038790A1 VEHICLE, ENERGY CONVERSION DEVICE AND CONTROL METHOD THEREOF 有权
公开(公告)号：US20230038790A1
公开(公告)日：2023-02-09
申请号：US17790398
申请日：2020-12-10
申请人： BYD COMPANY LIMITED
发明人： Heping LING , Hua PAN , Feiyue XIE , Ri HUANG , Yihao ZHENG
IPC分类号： B60L58/27 , H02P27/08 , H02J7/00 , H01M10/42 , H01M10/44 , H01M10/615 , H01M10/625 , H01M10/63
摘要： The present disclosure relates to the technical field of vehicles, and provides a vehicle and an energy conversion device and a control method therefor. The energy conversion device includes a motor controller, a bus capacitor, a first switch module, a motor, and a second switch module. By controlling the first switch module and the second switch module to be turned on/off, a motor driving circuit can be formed by a battery pack, the first switch module, the bus capacitor, the motor controller, and the motor, and a charging and discharging circuit can be formed by the battery pack, the second switch module, the motor, the motor controller, and the bus capacitor.

2. 发明申请

US20220077709A1 POWER BATTERY CHARGING METHOD, MOTOR CONTROL CIRCUIT, AND VEHICLE 有权
公开(公告)号：US20220077709A1
公开(公告)日：2022-03-10
申请号：US17416745
申请日：2019-12-17
申请人： BYD COMPANY LIMITED
发明人： Changjiu LIU , Hua PAN , Ronghua NING , Yang LIU , Ning YANG
IPC分类号： H02J7/00 , H02J7/04 , H02P27/08
摘要： The present disclosure provides a power battery charging method, a motor control circuit, and a vehicle. The motor control circuit includes a first switch module, a three-phase inverter, and a control module, where a power supply module, the first switch module, the three-phase inverter, and a three-phase alternating current motor form a current loop, the three-phase alternating current motor inputs or outputs a current by using a wire N extending from a connection point of three phase coils, and the control module controls the three-phase inverter, so that the motor control circuit receives a voltage of the power supply module and outputs a direct current. In the technical solutions, a wire N extends from the three-phase alternating current motor, and further forms different charging loops with the three-phase inverter, the three-phase alternating current motor, and the power battery. When it is detected that the voltage of the power supply module is not higher than a voltage of the power battery, the original three-phase inverter and three-phase alternating current motor are adopted to boost the voltage of the power supply module before the power battery is charged, and in this way, no extra external boost circuit needs to be added, which reduces costs of the additional circuit.

3. 发明申请

US20220289053A1 ENERGY CONVERSION APPARATUS AND VEHICLE 有权
公开(公告)号：US20220289053A1
公开(公告)日：2022-09-15
申请号：US17635620
申请日：2020-08-13
申请人： BYD COMPANY LIMITED
发明人： Yubo LIAN , Heping LING , Jicheng LI , Hua PAN , Feiyue XIE
IPC分类号： B60L53/24 , H02M7/797 , B60L53/22 , H02J7/00 , B60L58/14 , B60L58/15
摘要： The present invention relates to the technical field of vehicles, and provides an energy conversion device and a vehicle. The energy conversion device includes a reversible pulse-width modulation (PWM) rectifier, a motor coil connected with the reversible PWM rectifier, a one-way conduction module, and a capacitor. A DC charging circuit or a DC discharging circuit is formed by an external DC port with an external battery by using the energy conversion device, and a driving circuit is formed by the external battery with the reversible PWM rectifier and the motor coil in the energy conversion device. The one-way conduction module is connected between a first end of the capacitor and a second end of the external DC port, or the one-way conduction module is connected between a second end of the capacitor and a first end of the external DC port.

4. 发明申请

US20220348094A1 ENERGY CONVERSION APPARATUS AND VEHICLE 有权
公开(公告)号：US20220348094A1
公开(公告)日：2022-11-03
申请号：US17763916
申请日：2020-08-18
申请人： BYD COMPANY LIMITED
发明人： Hua PAN , Jicheng LI , Feiyue XIE , Yuxin ZHANG , Ning YANG
IPC分类号： B60L53/24 , B60H1/00 , B60L58/26 , B60L58/27 , B60R16/033 , H02M7/797 , H02P25/22
摘要： An energy conversion device is provided. The device includes: a reversible pulse width modulation (PWM) rectifier (11) and a motor coil (12), where the motor coil (12) includes at least a first winding unit and a second winding unit, and the first winding unit and the second winding unit are both connected with the reversible PWM rectifier (11). The first winding unit is connected with at least one of neutral lines in the second winding unit, where at least one neutral line of at least one of the winding units is connected with a first end of a first direct current (DC) charging and discharging port (3), the reversible PWM rectifier (11) is connected with a first end of a external battery (2) and a second end of the external battery (2) respectively, and a second end of the first DC charging and discharging port (3) is connected with the second end of the external battery (2).

5. 发明申请

US20220077518A1 VEHICLE AND POWER BATTERY HEATING APPARATUS AND METHOD THEREOF 有权
公开(公告)号：US20220077518A1
公开(公告)日：2022-03-10
申请号：US17416781
申请日：2019-12-20
申请人： BYD COMPANY LIMITED
发明人： Heping LING , Hua PAN , Yuxin ZHANG , Guo TIAN , Zhao XIE
IPC分类号： H01M10/615 , H02J7/00 , B60L58/27 , H01M10/48 , H01M10/613 , H01M10/625 , H01M10/635 , H01M10/6567 , H01M10/663
摘要： The present disclosure provides a vehicle and a power battery heating apparatus and method thereof. In the power battery heating method, when a current temperature value of a power battery is lower than a preset temperature value, and a heating condition of the power battery meets a preset condition, a three-phase inverter is controlled to cause a three-phase alternating current motor to generate heat according to heating energy, to heat a coolant flowing through the power battery, a preset quadrature-axis current that causes a torque value outputted by the motor to be an appropriate value is obtained, and a corresponding preset direct-axis current is obtained according to heating power of the power battery, so as to control, according to the preset direct-axis current and the preset quadrature-axis current, the three-phase inverter to adjust a phase current of the three-phase alternating current motor in the heating process, where a direction of the preset direct-axis current changes periodically in the heating process, thereby making quantities of times of switching-on and switching-off of an upper leg and a lower leg of power switching devices of the same phase equal, and service life of devices balanced.

6. 发明申请

US20220329184A1 COOPERATIVE CONTROL METHOD AND APPARATUS FOR ENERGY CONVERSION APPARATUS, STORAGE MEDIUM, AND VEHICLE 有权
公开(公告)号：US20220329184A1
公开(公告)日：2022-10-13
申请号：US17764038
申请日：2020-08-18
申请人： BYD COMPANY LIMITED
发明人： Yubo LIAN , Heping LING , Jicheng LI , Hua PAN , Li MOU
IPC分类号： H02P21/14 , B60L58/10
摘要： A cooperative control method for an energy conversion apparatus is disclosed. The cooperative control method includes: acquiring a target heating power, a target driving power, and a target charging and discharging power; acquiring a first heating power of a motor coil according to the target charging and discharging power; acquiring a second heating power of the motor coil according to the target driving power; adjusting a first quadrature axis current and a first direct axis current to a target quadrature axis current and a target direct axis current when a difference between a sum of the first heating power and the second heating power and the target heating power is not within a preset range, to cause the difference between the sum of the first heating power and the second heating power and the target heating power to be within the preset range; and acquiring a sampling current value on each phase coil and a motor rotor position, and calculating a duty cycle of each phase bridge arm in a reversible pulse width modulation (PWM) rectifier.

7. 发明申请

US20220085746A1 ELECTRIC MOTOR DRIVING APPARATUS, CONTROL METHOD, VEHICLE, AND READABLE STORAGE MEDIUM 有权
公开(公告)号：US20220085746A1
公开(公告)日：2022-03-17
申请号：US17416853
申请日：2019-12-17
申请人： BYD COMPANY LIMITED
发明人： Yubo LIAN , Heping LING , Hua PAN , Feiyue XIE , Lijun ZHANG
IPC分类号： H02P27/08 , H02P29/62 , H02J7/00
摘要： The present disclosure discloses a motor drive apparatus, a method for controlling the same, a vehicle, and a readable storage medium, where the control method includes: obtaining a required heating power and a required charging power; and adjusting a current value and direction of each phase current of a three-phase motor based on the required heating power, the required charging power, and an output of the motor at a zero torque, to simultaneously control a process of charging a power battery by a power supply module, the torque of the three-phase motor at a zero output, and a three-phase inverter and the three-phase motor to heat a heat exchange medium flowing through at least one of the three-phase inverter or the three-phase motor.

8. 发明申请

US20220080858A1 VEHICLE AND POWER BATTERY HEATING APPARATUS AND METHOD THEREFOR 有权
公开(公告)号：US20220080858A1
公开(公告)日：2022-03-17
申请号：US17416884
申请日：2019-12-20
申请人： BYD COMPANY LIMITED
发明人： Yubo LIAN , Heping LING , Hua PAN , Yuxin ZHANG , Hao CHEN
IPC分类号： B60L58/27 , B60L3/00
摘要： This application provides a vehicle and a power battery heating apparatus and method thereof. In the power battery heating method, when a current temperature value of a power battery is lower than a preset temperature value, and a heating condition of the power battery meets a preset condition, a three-phase inverter is controlled to cause a three-phase alternating current motor to generate heat according to heating energy to heat a coolant flowing through the power battery. A preset quadrature-axis current that causes a torque value outputted by the motor to be an appropriate value is obtained, and a corresponding preset direct-axis current is obtained according to heating power of the power battery, to control, according to the preset direct-axis current and the preset quadrature-axis current, the three-phase inverter to adjust a phase current of the three-phase alternating current motor in the heating process, so that electromagnetic torque with a relatively small torque value is outputted at a motor shaft. The electromagnetic torque cannot cause the vehicle to move, also cannot cause a damage to parts and components of a transmission mechanism of the vehicle. It only causes the motor output shaft to output a pre-tightening force to the transmission mechanism, thereby eliminating an engagement gap and effectively avoiding jitter of the vehicle.

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